EP2148807B1 - Procedes et appareils pour ancrer et pour relier des lignes a des articles sur le fond marin - Google Patents
Procedes et appareils pour ancrer et pour relier des lignes a des articles sur le fond marin Download PDFInfo
- Publication number
- EP2148807B1 EP2148807B1 EP08737196A EP08737196A EP2148807B1 EP 2148807 B1 EP2148807 B1 EP 2148807B1 EP 08737196 A EP08737196 A EP 08737196A EP 08737196 A EP08737196 A EP 08737196A EP 2148807 B1 EP2148807 B1 EP 2148807B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tether
- mooring
- connector
- free end
- portions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 23
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000007667 floating Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 10
- 229910000635 Spelter Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/22—Handling or lashing of anchors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/04—Fastening or guiding equipment for chains, ropes, hawsers, or the like
Definitions
- This invention relates to methods of and apparatus for connecting lines to articles on the seabed.
- the primary purpose is to provide a mooring apparatus and a method of mooring suitable for use with large offshore production vessels, such as drilling vessels and production buoys.
- the invention can be applied anywhere where it is desired to attach a heavy tether to an article already deployed on the seabed, for anchoring another article, or for lifting the seabed article itself.
- tether will be used to refer to a mooring leg, but also includes a hoisting cable or chain, unless the context requires otherwise.
- a typical mooring system for a production vessel comprises a loading buoy (otherwise known as a catenary anchor leg mooring (CALM) buoy) having a number of anchors deployed about it to hold the buoy in position via connecting lines.
- a typical arrangement for the deployment of these anchors is in a circle centred on the buoy. This type of arrangement means that the loads and forces that will be exerted on the buoy by the sea and climatic conditions can be resisted no matter the direction from which they originate. Normally any moored vessel will be able to rotate (or “weathervane”) in relation to the buoy.
- the vessel may be directly anchored to the seabed without use of a loading buoy.
- the present invention may be used to set an array of anchors in the seabed about the buoy/vessel.
- the anchors may comprise simple weights, suction anchors or drag-embedment anchors.
- the buoy or production vessel is held in place by a series of anchors buried in the seabed.
- This normally means between 6 and 12 anchors equidistantly spaced (or spaced in groups) about the circumference of a circle formed with the buoy at its centre so that the buoy is held in place.
- Each anchor is at the end of a mooring leg extending from the vessel or buoy to the seabed.
- the terms "mooring leg” and “main tether” are used to encompass a variety of specific forms of tether, of which heavy chain is the most typical example. Other forms of mooring leg are of course possible, and often comprise sections of chain and sections of cable, connected together according to the properties required at each point along their extent.
- conventional methods involve locating and deploying the anchor with it connected to a mooring leg of the buoy.
- the anchor is therefore deployed with the full weight of the chain, which forms a part of the mooring leg and connects the anchor to the loading buoy.
- the sheer weight even with the apparent lightening effect of the water becomes burdensome and difficult to operate with.
- the buoy or vessel to be moored has to be on site when the operation is being carried out, which could be a number of days. Logistically this is inefficient as the buoy/vessel is in effect out of service and the operation is more difficult to timetable.
- tether connection apparatus for remotely interconnecting respective free ends of first and second portions of a mooring tether, said apparatus comprising:
- Said tether connection apparatus may be operable to have said connector mounted to said means for releasably mounting a connector, wherein said connector is attached to the free end of a second of said portions of mooring tether, prior to deployment of the apparatus
- Said tether connection apparatus may be operable such that said first of said portions of mooring tether is attached to an anchor on the seabed, while the second of said portions of mooring tether is attached to an object to be moored.
- Said means for releasably mounting a connector may be designed specifically to enable mounting of standard connectors, already commonly used for connecting lines, or portions of lines together.
- Such connectors may be any of the type commonly used to connect together, for example, chain with chain, chain with wire or wire with wire, as appropriate.
- Such connectors may include, a shackle with associated pin, spelter sockets, chain links or triplates. This means that expensive and complicated purpose made mooring line connectors can be dispensed with.
- Said means for releasably mounting a connector may be adapted to be able to mount two or more types of connectors.
- Said apparatus may further comprise a suitable connector, pre-installed on said means for releasably mounting a connector.
- Said apparatus may further comprise alignment means for aligning one portion of the mooring tether with the other prior to their being interconnected.
- Said alignment means may comprise a channel.
- Said channel may be arranged to accommodate the free end of said portions of mooring tether to correctly locate and align said free end, for subsequent interconnection.
- Said channel may have a relatively wide opening, tapering inwards, thus forming a funnel shape.
- Said channel may include a restricted section for locating and orienting one of said free ends of portion of mooring tether.
- Said restricted section may include one or more locating pins.
- Said one or more locating pins may be designed to cooperate with and therefore properly locate and orientate a link of mooring chain.
- Said one or more locating pins may be adaptable, either by themselves or by way of the addition of an adaptor, so to be able to properly position wire, as well as chain.
- Said channel may be located on carriage allowing movement of said channel, and therefore said portion of said mooring leg located therein, relative to said first portion of the mooring tether and/or said connecting means.
- Said carriage may allow movement along the axis of the connection. The carriage may also allow for lateral movement.
- Said pull-in means may comprise a winch.
- a method of mooring an object to the seabed using the tether connection apparatus of the first aspect of the invention comprising:
- the step of installing said connector on said tether connection apparatus may be done as an initial step such that the connector is pre-installed on said tether connection apparatus.
- said connecting of the free end of a second portion of mooring tether to said connector may be done prior to the deployment step, for example when installing said tether connection apparatus to the free end of a second portion of mooring tether.
- Some or all of these steps may be done on an installation vessel.
- the free end of a second portion of mooring tether may be connected to said tether connection apparatus before installation of the connector.
- the step of installing said connector on said tether connection apparatus may be done after deployment of the tether connection apparatus.
- the connecting of the free end of a second portion of mooring tether to said connector will also be done after deployment, once said connector has been installed on said tether connection apparatus.
- Said first and second portions of mooring tether may consist of chain or wire.
- said first portion consists of chain and said second portion consists of wire.
- One or more of the steps including and subsequent to the deployment step may be done by a Remotely Operated Vehicle (ROV).
- ROV Remotely Operated Vehicle
- Said method preferably comprises the final step of recovering said tether connection apparatus. This may be done by an ROV.
- Said method may further comprise the step of aligning one portion of the mooring tether with the other prior to their being interconnected.
- it is the free end of first portion of the mooring tether that is aligned relative to the free end of said second portion of the mooring tether and connector.
- Said free end of first portion of the mooring tether may be pulled into a channel comprised in said tether connection apparatus to correctly locate and align said free end, for subsequent interconnection.
- Said channel, and therefore said portion of said mooring leg located therein may be moved relative to second portion of the mooring tether and said connecting means to aid alignment.
- Said connector may comprise a shackle with associated pin, spelter sockets, chain links or triplates.
- Said first portion of mooring tether may be pre-routed on the seabed prior to it being pulled-in to said tether connection apparatus.
- this comprises a carriage 220 movable along the frame 110 on tracks 240.
- a funnel 260 leading to a narrow channel 270 with locating pins 280 therein.
- the device 100 is pre-installed onto one end of one of the portions 200b of the mooring leg 200 to be connected.
- the device 100 has remote operated functions, controlled by, and powered from, a Remotely Operated Vehicle (ROV), for pull-in, alignment and locking of the other portion of the mooring leg, installation and securing of shackle/socket pin and release of connection from device 100.
- ROV Remotely Operated Vehicle
- Pull-in and connection operations can be performed on seabed or midwater.
- FIGS 3a to 3k depict a method of installing a mooring leg 200 using the device 100 described above.
- the loading buoy that is to be moored is suspended by a crane, temporary suspended midwater and held in place by a deadman anchor on the seabed or held in position on the surface.
- the mooring anchor 1 is also installed on the seabed with its portion of the mooring leg 200a (in this case a chain, although it may be wire, rope or of other suitable construction) attached, this chain being pre-routed on the seabed such that its free end is in the vicinity of the buoy;
- the connector (a shackle and socket pin in the above example, although use of any suitable connector is envisaged) does not need to be pre-installed, and instead could be installed after deployment using an ROV.
- the above example is shown in relation to mooring a loading buoy, but other applications for this apparatus and method include, but are not limited to, the connections for the mooring lines of FPSOs (Floating, Production, Storage and Offloading vessels), rigs and riser systems.
- FPSOs Floating, Production, Storage and Offloading vessels
- the pins 280 of the alignment system may be adapted should it be a wire portion of a mooring leg that requires pulling in and aligning.
- Said pins 280 may be adaptable, either by themselves or by way of the addition of an adaptor, so to be able to properly position both chain and wire.
Landscapes
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Revetment (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Earth Drilling (AREA)
- Artificial Fish Reefs (AREA)
- Catching Or Destruction (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Wind Motors (AREA)
Claims (20)
- Appareil de jonction (100) de lignes destiné à relier entre elles à distance des extrémités libres (200a, 200b) respectivement d'une première et d'une deuxième portion d'une ligne d'ancrage, ledit appareil étant caractérisé en ce qu'il comprend :un moyen de traction (180) pouvant être actionné pour tirer dans ledit appareil l'extrémité libre de l'une desdites portions de la ligne d'ancrage, suite au déploiement de l'appareil ;un moyen destiné à monter en vue de sa libération un connecteur (140), ledit moyen étant conçu pour monter un connecteur (140) pouvant être actionné pour relier entre elles les extrémités libres (200a, 200b) respectivement desdites première et deuxième portions de la ligne d'ancrage, une fois que ledit moyen de traction (180) a tiré dans ledit appareil (100) l'extrémité libre d'une première (200a) desdites portions de la ligne d'ancrage, ledit moyen pouvant être actionné pour libérer le connecteur (140) une fois la jonction réalisée.
- Appareil selon la revendication 1, dans lequel ledit appareil de jonction (100) de lignes peut être actionné pour que l'on puisse monter ledit connecteur (140) sur ledit moyen destiné à monter un connecteur en vue de sa libération, dans lequel ledit connecteur est fixé à l'extrémité libre d'une deuxième desdites portions de la ligne d'ancrage, avant le déploiement de l'appareil.
- Appareil selon les revendications 1 ou 2, dans lequel ledit appareil de jonction de lignes peut être actionné pour relier une première (200a) desdites portions de la ligne d'ancrage qui est attachée à une ancre sur le fond marin et une deuxième (200b) desdites portions de la ligne d'ancrage qui est attachée à un objet à amarrer.
- Appareil selon l'une quelconque des revendications précédentes, dans lequel ledit moyen destiné à monter un connecteur en vue de sa libération est spécifiquement conçu pour permettre de monter des connecteurs standard (140), déjà communément employés pour joindre ensemble des lignes ou des portions de lignes.
- Appareil selon la revendication 4, dans lequel lesdits connecteurs (140) sont de tout type communément employé pour joindre ensemble une chaîne et une chaîne, une chaîne et un câble ou un câble et un câble, selon les besoins.
- Appareil selon l'une quelconque des revendications précédentes, dans lequel ledit moyen destiné à monter en vue de sa libération un connecteur (140) est adapté pour pouvoir monter au minimum deux types de connecteurs.
- Appareil selon l'une quelconque des revendications précédentes, dans lequel ledit appareil comprend en outre un connecteur approprié, préinstallé sur ledit moyen destiné à monter un connecteur en vue de sa libération.
- Appareil selon l'une quelconque des revendications précédentes, dans lequel ledit appareil comprend un moyen d'alignement (120) destiné à aligner une portion de la ligne d'ancrage avec l'autre avant de les joindre entre elles.
- Appareil selon la revendication 8, dans lequel ledit moyen d'alignement comprend une gorge (260) dotée d'une ouverture relativement large, se rétrécissant vers l'intérieur, définissant ainsi une forme d'entonnoir, ladite gorge (260) étant placée pour recevoir l'extrémité libre desdites portions de ligne d'ancrage afin de positionner et aligner correctement ladite extrémité libre en vue d'une future jonction dans ladite gorge.
- Appareil selon la revendication 9, dans lequel ladite gorge (260) comprend une section rétrécie pour positionner et orienter l'une desdites extrémités libres d'une portion de la ligne d'ancrage.
- Appareil selon la revendication 10, dans lequel ladite section rétrécie comprend un ou plusieurs ergots de guidage (280), conçus pour coopérer avec un maillon de la chaîne d'ancrage afin de le positionner et de l'orienter correctement.
- Appareil selon l'une quelconque des revendications précédentes, dans lequel ledit moyen de traction comprend un treuil (180).
- Procédé d'ancrage d'un objet sur le fond marin à l'aide de l'appareil de jonction de lignes selon l'une quelconque des revendications précédentes, ledit procédé comprenant les étapes suivantes :installer un connecteur sur ledit appareil de jonction de lignes ;installer au moins une ancre sur le fond marin, ladite ancre étant attachée à une première portion d'une ligne d'ancrage ;installer ledit appareil de jonction de lignes à l'extrémité libre d'une deuxième portion de la ligne d'ancrage, l'autre extrémité de cette dernière étant attachée à l'objet à ancrer ;joindre l'extrémité libre d'une deuxième portion de la ligne d'ancrage et ledit connecteur ;déployer ladite extrémité libre de la deuxième portion de la ligne d'ancrage, ledit appareil de jonction de lignes étant attaché à cette dernière ;utiliser ledit moyen de traction pour tirer l'extrémité libre de ladite première portion de la ligne d'ancrage dans ledit appareil de jonction de lignes ;joindre l'extrémité libre de ladite première portion de la ligne d'ancrage et ledit connecteur, reliant ainsi entre elles les première et deuxième portions de la ligne d'ancrage ; etlibérer le connecteur dudit moyen destiné à monter un connecteur en vue de sa libération.
- Procédé selon la revendication 13, dans lequel une ou plusieurs étapes, et notamment l'étape de déploiement et les suivantes, sont réalisées par un engin télécommandé.
- Procédé selon les revendications 13 ou 14, dans lequel ledit procédé comprend de préférence l'étape finale de récupérer ledit appareil de jonction de lignes.
- Procédé selon les revendications 13, 14 ou 15, dans lequel ledit procédé comprend l'étape d'aligner une portion de la ligne d'ancrage sur l'autre avant de les joindre ensemble.
- Procédé selon la revendication 16, dans lequel c'est l'extrémité libre de la première portion de la ligne d'ancrage qui est alignée par rapport à l'extrémité libre de ladite deuxième portion de la ligne d'ancrage et au connecteur.
- Procédé selon la revendication 17, dans lequel ladite extrémité libre de la première portion de la ligne d'ancrage est tirée dans une gorge prévue dans ledit appareil de jonction de lignes pour positionner et aligner correctement ladite extrémité libre en vue d'une future jonction.
- Procédé selon la revendication 18, dans lequel ladite gorge, et donc ladite portion de ladite ligne d'ancrage située à l'intérieur, est déplacée par rapport à la deuxième portion de la ligne d'ancrage et ledit moyen de jonction pour faciliter l'alignement.
- Procédé selon l'une quelconque des revendications 13 à 19, dans lequel ladite première portion de la ligne d'ancrage est prépositionnée sur le fond marin avant d'être tirée dans ledit appareil de jonction de lignes.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0707673.0A GB0707673D0 (en) | 2007-04-20 | 2007-04-20 | Methods of and apparatus for mooring and for connecting lines to articles on the seabed |
PCT/GB2008/050271 WO2008129320A1 (fr) | 2007-04-20 | 2008-04-18 | Procédés et appareils pour ancrer et pour relier des lignes à des articles sur le fond marin |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2148807A1 EP2148807A1 (fr) | 2010-02-03 |
EP2148807B1 true EP2148807B1 (fr) | 2011-02-23 |
Family
ID=38135155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08737196A Active EP2148807B1 (fr) | 2007-04-20 | 2008-04-18 | Procedes et appareils pour ancrer et pour relier des lignes a des articles sur le fond marin |
Country Status (8)
Country | Link |
---|---|
US (1) | US8176866B2 (fr) |
EP (1) | EP2148807B1 (fr) |
AT (1) | ATE499280T1 (fr) |
AU (1) | AU2008240391B2 (fr) |
BR (1) | BRPI0810367B1 (fr) |
DE (1) | DE602008005131D1 (fr) |
GB (1) | GB0707673D0 (fr) |
WO (1) | WO2008129320A1 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0707673D0 (en) | 2007-04-20 | 2007-05-30 | Acergy Norway As | Methods of and apparatus for mooring and for connecting lines to articles on the seabed |
ES2370981B1 (es) * | 2010-06-07 | 2012-11-06 | Vicinay Cadenas, S.A. | Equipo para unir en vertical dos tramos de cadena. |
GB2483701B (en) | 2010-09-17 | 2013-02-13 | Acergy France Sa | Improvements in or relating to line-laying operations |
US9221521B2 (en) * | 2012-07-10 | 2015-12-29 | Chevron U.S.A. Inc. | Apparatus and anchor handling vessels for installing or removing and replacing a segment of a mooring line |
US9879396B2 (en) * | 2013-06-24 | 2018-01-30 | Trendsetter Vulcan Offshore, Inc. | Systems and methods for tethering subsea structure mounted on a wellhead |
GB2551379B (en) | 2016-06-16 | 2018-12-12 | Acergy France SAS | Upgrading subsea foundations of mooring systems |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2069082B (en) * | 1980-02-11 | 1983-10-05 | Brown John Constr | Connector assembly |
US5364075A (en) * | 1992-09-03 | 1994-11-15 | Smith Berger Marine, Inc. | Retractable mount for a mooring line guide and process for operating the same |
NO303741B1 (no) * | 1996-03-28 | 1998-08-24 | Alcatel Kabel Norge As | Anordning og fremgangsmöte for forankring av et stigeraar eller lignende |
EP1226068B1 (fr) * | 1999-11-01 | 2004-04-28 | Offshore Energy Development Corporation | Procede de connexion de ligne d'ancrage sous-marine et connecteur associe |
GB0104313D0 (en) | 2001-02-07 | 2001-04-11 | Stolt Offshore Sa | Mooring apparatus and method of mooring |
EP1283158A1 (fr) * | 2001-08-06 | 2003-02-12 | Single Buoy Moorings Inc. | Procédé d'installation de ligne d'ancrage et connecteur associé |
US6651580B2 (en) * | 2002-02-22 | 2003-11-25 | Globalsantafe Corporation | Method and system for mooring |
SE526076C2 (sv) * | 2003-05-14 | 2005-06-28 | Gva Consultants Ab | Tätningsanordning och metod för tätning mellan en kätting och ett kättingschakt |
GB0707673D0 (en) | 2007-04-20 | 2007-05-30 | Acergy Norway As | Methods of and apparatus for mooring and for connecting lines to articles on the seabed |
-
2007
- 2007-04-20 GB GBGB0707673.0A patent/GB0707673D0/en not_active Ceased
-
2008
- 2008-04-18 AU AU2008240391A patent/AU2008240391B2/en active Active
- 2008-04-18 EP EP08737196A patent/EP2148807B1/fr active Active
- 2008-04-18 US US12/596,804 patent/US8176866B2/en active Active
- 2008-04-18 DE DE602008005131T patent/DE602008005131D1/de active Active
- 2008-04-18 WO PCT/GB2008/050271 patent/WO2008129320A1/fr active Application Filing
- 2008-04-18 AT AT08737196T patent/ATE499280T1/de not_active IP Right Cessation
- 2008-04-18 BR BRPI0810367-4A patent/BRPI0810367B1/pt active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
BRPI0810367B1 (pt) | 2020-01-07 |
ATE499280T1 (de) | 2011-03-15 |
US8176866B2 (en) | 2012-05-15 |
DE602008005131D1 (de) | 2011-04-07 |
AU2008240391A1 (en) | 2008-10-30 |
WO2008129320A1 (fr) | 2008-10-30 |
GB0707673D0 (en) | 2007-05-30 |
US20100192828A1 (en) | 2010-08-05 |
BRPI0810367A2 (pt) | 2016-10-04 |
AU2008240391B2 (en) | 2013-05-02 |
EP2148807A1 (fr) | 2010-02-03 |
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